The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2000
Filed:
May. 06, 1998
Robert S Schultz, Old Greenwich, CT (US);
Philip M Miller, North Haven, CT (US);
Emson, Inc., Bridgeport, CT (US);
Abstract
A spray dispensing device is provided which can be used with non-pressurized containers. The device includes passageways for directing streams of air and, liquid where the liquid is broken up into droplets and emitted as a fine spray through an orifice. An annular air passageway is concentrically disposed around a liquid passageway, and the air is lead through air swirl passages, where the annular stream of air is given a rotary motion as the result of swirl vanes forming the air swirl passages. The velocity of air past a product passageway exit orifice also creates a Bernoulli effect which reduces pressure at that orifice, which acts to draw liquid to the spray orifice. The device may include a dip tube for the liquid which is provided with a check valve for retaining liquid at a high level in the dip tube after each spray cycle so that spraying is nearly instantaneous upon actuation. Several embodiments of reciprocating closure valves may be used to close the orifice to prevent drying withing the product passageway.